Methods and apparatus for artifact removal for bit depth scalability

Abstract

There are provided methods and apparatus for artifact removal for bit depth scalability. The method and apparatus utilize an encoder (100) for encoding an enhancement layer for at least a portion of a picture. A deblocking filter is applied at the enhancement layer for bit depth scalability (500). A decoding method and apparatus are described for decoding an enhancement layer for at least a portion of a picture, wherein the during the decoding process, a deblocking filter is applied at the enhancement layer for bit depth scalability (600). Furthermore, an encoder and method are described for encoding image data for at least one block of a picture, wherein a deblocking filter (117) removes coding artifacts caused by local inverse tone mapping for intra-layer texture prediction for bit depth scalability. A decoding method and apparatus are described for decoding image data for at least one block of a picture, wherein a deblocking filter (230, 237, 435) removes coding artifacts caused by local inverse tone mapping for intra-layer texture prediction for bit depth scalability.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 60 / 980,322, filed October 16, 2007, which is hereby incorporated by reference in its entirety. Further, this application is related to Attorney Docket No. PU070260, entitled "Method and Apparatus for Artifact Removal for Bit-Depth Scalability," which also claims The benefit of US Provisional Application No. 60 / 980,322, filed October 16, 2007, is commonly assigned, and is hereby incorporated by reference and filed concurrently with the present application. technical field [0003] The present principles relate generally to video encoding and decoding, and more specifically to methods and apparatus for artifact removal for bit-depth scalability. Background technique [0004] Bit depth refers to the number of bits used to accommodate a pixel. Sometimes referred to as "color depth" and / or "pixel depth," bit depth determines the maximum number of colors...

AI Technical Summary

Problems solved by technology

The first solution is inherently non-compliant with the International Organization for Standardization / International Electrotechnical Commission (ISO / IEC) Motion Picture Experts Group-4 (MPEG-4) Part 10 Advanced Video Coding (AVC) standard / International Telecommunication Union Telecommunication Division (ITU -T) 8-bit profile of H.264 recommendation (hereinafter referred to as "MPEG-4 AVC standard")

The second solution complies with all current standards, but requires more overhead

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